Concrete examples

Calculating the time correction value for the front left speaker on the diagram below.

Conditions:

Distance between farthest speaker and listening position: 2.25 m (88-3/4")

Distance between front left speaker and listening position:

0.5m (20")

Calculation:

L = 2.25 m (88-3/4") – 0.5 m (20")= 1.75 m (68-3/4") Compensation time = 1.75 ÷ 343 x 1000 = 5.1 (ms)

In other words, setting the time correction value for the front left speaker to 5.1 (ms) sets a virtual distance matching the distance to the farthest speaker.

5.1ms 0.5m

2.25m

Phase Switching

Setting item: Phase

Switch the phase (0° or 180°) by touching [ ] or [ ] of the desired speaker.

Graphic Equalizer Adjustments

The graphic equalizer allows you to modify the sound using 31 bands each for the front (left and right), rear (left and right) and center speakers. An additional 10 bands are available for the subwoofer. This allows you to customize the sound to suit your taste.

Setting item: G-EQ

1 Select L+R or L/R by touching [ ] or [ ] of G-EQ.

L+R: Sets the same adjustment values for the left and right channels.

L/R: Different adjustment values can be set for the left and right channels.

When parametric EQ is adjusted, this setting will be turned off.

2 Touch the title bar of G-EQ.The G-EQ list screen appears.

3 Touch the title bar of the desired speaker (channel). The G-EQ adjustment screen appears.

The sound is uneven because the distance between the listening position and the different speakers is different. The difference in the distance between the front left and rear right speakers is 1.75 meters (68-3/4").

Time correction eliminates the difference between the time required for the sound from the different speakers to reach the listening position. Setting the time correction of the front left speaker to 5.1 ms makes it possible to coordinate the distance from the listening position to the speaker.

4 Adjust the G-EQ to your preference.

Adjusting the Level

Touch [ ] or [ ] of the desired frequency to adjust the level.

When the speaker is set to the “OFF” mode, the graphic equalizer

for that speaker cannot be set. Refer to “Setting the Speakers”

(page 81).

Check the playable frequency ranges of the connected speakers

before making the equalizer adjustments. If the speaker’s playable

frequency range is 55 Hz to 30 kHz, for example, adjusting the 40 Hz

4 Touch [ ] or [ ] of Time Correction.

Select L+R or L/R.

L+R: Sets the same adjustment values for the left and right channels.

L/R: Different adjustment values can be set for the left and right channels.

5 Touch the title bar of Time Correction.

The Time Correction adjustment screen appears.

6 Adjust the time correction value (0.00 ~ 20.00ms) of a desired speaker by touching the respective [ ] or [ ] button (1 step = 0.05ms).

When the speaker is set to the “OFF” mode, the TCR for that speaker cannot be set. Refer to “Setting the Speakers” (page 81).

The adjustment value for Front2 (Speakers) which is adjusted in time correction, is also applied to the front speakers in “Setting Bass Focus” (page 78).

The adjustment (AUTO TCR) cannot be automatically set on this unit.

80-EN

or 20 Hz band has no effect. Additionally, you may overload and

damage the speakers.

When Graphic EQ is adjusted, the adjustment for Parametric EQ

becomes ineffective.

Parametric Equalizer Adjustments

The frequency bands of the graphic equalizer are fixed. This makes it very difficult to correct for undesired peaks and dips at specific frequencies. The parametric equalizer’s center frequency can be tuned to these specific frequencies. Then, the bandwidth (Q) and level are fine-tuned, independently, to make the necessary corrections. The parametric equalizer function is an advanced tool for serious audiophiles.

Setting item: P-EQ

1 Select L+R or L/R by touching [ ] or [ ] of P-EQ.

L+R: Sets the same adjustment values for the left and right channels.

L/R: Different adjustment values can be set for the left and right channels.

When Graphic EQ is adjusted, this setting will be turned off.

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Alpine INA-W910 owner manual Phase Switching, Graphic Equalizer Adjustments, 80-EN, Parametric Equalizer Adjustments